[mirror_frr.git] / pimd / pim_register.c

/*
 * PIM for Quagga
 * Copyright (C) 2015 Cumulus Networks, Inc.
 * Donald Sharp
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
 * MA 02110-1301 USA
 */

#include <zebra.h>

#include "log.h"
#include "if.h"
#include "thread.h"
#include "prefix.h"

#include "pimd.h"
#include "pim_mroute.h"
#include "pim_iface.h"
#include "pim_msg.h"
#include "pim_pim.h"
#include "pim_str.h"
#include "pim_rp.h"
#include "pim_register.h"
#include "pim_upstream.h"
#include "pim_br.h"
#include "pim_rpf.h"
#include "pim_oil.h"
#include "pim_zebra.h"
#include "pim_join.h"
#include "pim_util.h"

struct thread *send_test_packet_timer = NULL;

/*
 * This seems stupidly expensive.  A list lookup.  Why is this
 * not a hash?
 */
static int
pim_check_is_my_ip_address (struct in_addr dest_addr)
{
  /*
   * See if we can short-cut some?
   * This might not make sense if we ever leave a static RP
   * type of configuration.
   * Note - Premature optimization might bite our patooeys' here.
   */
  if (I_am_RP(dest_addr) && (dest_addr.s_addr == qpim_rp.rpf_addr.s_addr))
    return 1;

  if (if_lookup_exact_address (&dest_addr, AF_INET))
    return 1;

  return 0;
}

static void
pim_register_stop_send (struct interface *ifp, struct in_addr source,
			struct in_addr group, struct in_addr originator)
{
  struct pim_interface *pinfo;
  unsigned char buffer[3000];
  unsigned int b1length = 0;
  unsigned int length;
  uint8_t *b1;
  struct prefix p;

  memset (buffer, 0, 3000);
  b1 = (uint8_t *)buffer + PIM_MSG_REGISTER_STOP_LEN;

  length = pim_encode_addr_group (b1, AFI_IP, 0, 0, group);
  b1length += length;
  b1 += length;

  p.family = AF_INET;
  p.u.prefix4 = source;
  p.prefixlen = 32;
  length = pim_encode_addr_ucast (b1, &p);
  b1length += length;

  pim_msg_build_header (buffer, b1length + PIM_MSG_REGISTER_STOP_LEN, PIM_MSG_TYPE_REG_STOP);

  pinfo = (struct pim_interface *)ifp->info;
  if (!pinfo)
    {
      if (PIM_DEBUG_PIM_TRACE)
        zlog_debug ("%s: No pinfo!\n", __PRETTY_FUNCTION__);
      return;
    }
  if (pim_msg_send (pinfo->pim_sock_fd, originator,
		    buffer, b1length + PIM_MSG_REGISTER_STOP_LEN,
		    ifp->name))
    {
      if (PIM_DEBUG_PIM_TRACE)
	{
	  zlog_debug ("%s: could not send PIM register stop message on interface %s",
		      __PRETTY_FUNCTION__, ifp->name);
	}
    }
}

void
pim_register_send (const struct ip *ip_hdr, struct pim_rpf *rpg)
{
  unsigned char buffer[3000];
  unsigned char *b1;
  struct pim_interface *pinfo;
  struct interface *ifp;
  uint32_t plen;

  ifp = rpg->source_nexthop.interface;
  pinfo = (struct pim_interface *)ifp->info;
  if (!pinfo) {
    zlog_debug("%s: No pinfo!\n", __PRETTY_FUNCTION__);
    return;
  }

  memset(buffer, 0, 3000);
  b1 = buffer + PIM_MSG_REGISTER_LEN;

  plen = ntohs(ip_hdr->ip_len);
  memcpy(b1, (const unsigned char *)ip_hdr, plen);

  pim_msg_build_header(buffer, plen + PIM_MSG_REGISTER_LEN, PIM_MSG_TYPE_REGISTER);

  if (pim_msg_send(pinfo->pim_sock_fd,
		   rpg->rpf_addr,
		   buffer,
		   plen + PIM_MSG_REGISTER_LEN,
		   ifp->name)) {
    if (PIM_DEBUG_PIM_TRACE) {
      zlog_debug("%s: could not send PIM register message on interface %s",
		 __PRETTY_FUNCTION__, ifp->name);
    }
    return;
  }
}

/*
 * 4.4.2 Receiving Register Messages at the RP
 *
 *   When an RP receives a Register message, the course of action is
 *  decided according to the following pseudocode:
 *
 *  packet_arrives_on_rp_tunnel( pkt ) {
 *      if( outer.dst is not one of my addresses ) {
 *          drop the packet silently.
 *          # Note: this may be a spoofing attempt
 *      }
 *      if( I_am_RP(G) AND outer.dst == RP(G) ) {
 *            sentRegisterStop = FALSE;
 *            if ( register.borderbit == TRUE ) {
 *                 if ( PMBR(S,G) == unknown ) {
 *                      PMBR(S,G) = outer.src
 *                 } else if ( outer.src != PMBR(S,G) ) {
 *                      send Register-Stop(S,G) to outer.src
 *                      drop the packet silently.
 *                 }
 *            }
 *            if ( SPTbit(S,G) OR
 *             ( SwitchToSptDesired(S,G) AND
 *               ( inherited_olist(S,G) == NULL ))) {
 *              send Register-Stop(S,G) to outer.src
 *              sentRegisterStop = TRUE;
 *            }
 *            if ( SPTbit(S,G) OR SwitchToSptDesired(S,G) ) {
 *                 if ( sentRegisterStop == TRUE ) {
 *                      set KeepaliveTimer(S,G) to RP_Keepalive_Period;
 *                 } else {
 *                      set KeepaliveTimer(S,G) to Keepalive_Period;
 *                 }
 *            }
 *            if( !SPTbit(S,G) AND ! pkt.NullRegisterBit ) {
 *                 decapsulate and forward the inner packet to
 *                 inherited_olist(S,G,rpt) # Note (+)
 *            }
 *      } else {
 *          send Register-Stop(S,G) to outer.src
 *          # Note (*)
 *      }
 *  }
 */
int
pim_register_recv (struct interface *ifp,
		   struct in_addr dest_addr,
		   struct in_addr src_addr,
		   uint8_t *tlv_buf, int tlv_buf_size)
{
  int sentRegisterStop = 0;
  struct ip *ip_hdr;
  //size_t hlen;
  struct in_addr group = { .s_addr = 0 };
  struct in_addr source = { .s_addr = 0 };
  //uint8_t *msg;
  uint32_t *bits;

  if (!pim_check_is_my_ip_address (dest_addr)) {
    if (PIM_DEBUG_PIM_PACKETS) {
      char dest[100];

      pim_inet4_dump ("<dst?>", dest_addr, dest, sizeof(dest));
      zlog_debug ("%s: Received Register message for %s that I do not own", __func__,
		  dest);
    }
    return 0;
  }

#define inherited_olist(S,G) NULL
  /*
   * Please note this is not drawn to get the correct bit/data size
   *
   * The entirety of the REGISTER packet looks like this:
   * -------------------------------------------------------------
   * | Ver  | Type | Reserved     |       Checksum               |
   * |-----------------------------------------------------------|
   * |B|N|     Reserved 2                                        |
   * |-----------------------------------------------------------|
   * | Encap  |                IP HDR                            |
   * | Mcast  |                                                  |
   * | Packet |--------------------------------------------------|
   * |        |               Mcast Data                         |
   * |        |                                                  |
   * ...
   *
   * tlv_buf when received from the caller points at the B bit
   * We need to know the inner source and dest
   */
  bits = (uint32_t *)tlv_buf;

  /*
   * tlv_buf points to the start of the |B|N|... Reserved
   * Line above.  So we need to add 4 bytes to get to the
   * start of the actual Encapsulated data.
   */
#define PIM_MSG_REGISTER_BIT_RESERVED_LEN 4
  ip_hdr = (struct ip *)(tlv_buf + PIM_MSG_REGISTER_BIT_RESERVED_LEN);
  source = ip_hdr->ip_src;
  group = ip_hdr->ip_dst;

  if (I_am_RP (group) && (dest_addr.s_addr == ((RP (group))->rpf_addr.s_addr))) {
    sentRegisterStop = 0;

    if (*bits & PIM_REGISTER_BORDER_BIT) {
      struct in_addr pimbr = pim_br_get_pmbr (source, group);
      if (PIM_DEBUG_PIM_PACKETS)
	zlog_debug("%s: Received Register message with Border bit set", __func__);

      if (pimbr.s_addr == pim_br_unknown.s_addr)
	pim_br_set_pmbr(source, group, src_addr);
      else if (src_addr.s_addr != pimbr.s_addr) {
	pim_register_stop_send (ifp, source, group, src_addr);
	if (PIM_DEBUG_PIM_PACKETS)
	  zlog_debug("%s: Sending register-Stop to %s and dropping mr. packet",
	    __func__, "Sender");
	/* Drop Packet Silently */
	return 1;
      }
    }

    struct pim_upstream *upstream = pim_upstream_find (source, group);
    /*
     * If we don't have a place to send ignore the packet
     */
    if (!upstream)
      {
	pim_register_stop_send (ifp, source, group, src_addr);
	return 1;
      }

    if ((upstream->sptbit == PIM_UPSTREAM_SPTBIT_TRUE) ||
	((SwitchToSptDesired(source, group)) &&
	 (inherited_olist(source, group) == NULL))) {
      pim_register_stop_send (ifp, source, group, src_addr);
      sentRegisterStop = 1;
    }

    if ((upstream->sptbit == PIM_UPSTREAM_SPTBIT_TRUE) ||
	(SwitchToSptDesired(source, group))) {
      if (sentRegisterStop) {
	pim_upstream_keep_alive_timer_start (upstream, PIM_RP_KEEPALIVE_PERIOD);
      } else {
	pim_upstream_keep_alive_timer_start (upstream, PIM_KEEPALIVE_PERIOD);
      }
    }

    if (!(upstream->sptbit == PIM_UPSTREAM_SPTBIT_TRUE) &&
	!(*bits & PIM_REGISTER_NR_BIT))
      {
	pim_rp_set_upstream_addr (&upstream->upstream_addr, source);
	pim_nexthop_lookup (&upstream->rpf.source_nexthop,
			    upstream->upstream_addr, NULL);
	upstream->rpf.source_nexthop.interface = ifp;
	upstream->source_addr.s_addr = source.s_addr;
	upstream->rpf.rpf_addr.s_addr = source.s_addr;
	upstream->channel_oil->oil.mfcc_origin = source;
	pim_scan_individual_oil (upstream->channel_oil);
	pim_joinprune_send(upstream->rpf.source_nexthop.interface,
			   upstream->rpf.source_nexthop.mrib_nexthop_addr,
			   upstream->source_addr,
			   upstream->group_addr,
			   1);

	//decapsulate and forward the iner packet to
	//inherited_olist(S,G,rpt)
      }
  } else {
    pim_register_stop_send (ifp, source, group, src_addr);
  }

  return 1;
}


static int
pim_register_send_test_packet (struct thread *t)
{
  uint8_t *packet;

  packet = THREAD_ARG(t);

  *packet = 4;

  return 1;
}

/*
 * pim_register_send_test_packet
 *
 * Send a test packet to the RP from source, in group and pps packets per second
 */
void
pim_register_send_test_packet_start (struct in_addr source,
				     struct in_addr group,
				     uint32_t pps)
{
  uint8_t *packet = NULL;

  THREAD_TIMER_MSEC_ON(master, send_test_packet_timer,
		       pim_register_send_test_packet, packet, 1000/pps);

  return;
}
Commit	Line	Data
01d68c9b DS	1	/*
	2	* PIM for Quagga
	3	* Copyright (C) 2015 Cumulus Networks, Inc.
	4	* Donald Sharp
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful, but
	12	* WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; see the file COPYING; if not, write to the
	18	* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
	19	* MA 02110-1301 USA
	20	*/
	21
	22	#include <zebra.h>
	23
	24	#include "log.h"
	25	#include "if.h"
	26	#include "thread.h"
13c2408c	27	#include "prefix.h"
01d68c9b DS	28
01d68c9b DS	29	#include "pimd.h"
998af219 DS	30	#include "pim_mroute.h"
	31	#include "pim_iface.h"
	32	#include "pim_msg.h"
	33	#include "pim_pim.h"
01d68c9b DS	34	#include "pim_str.h"
	35	#include "pim_rp.h"
	36	#include "pim_register.h"
80c0d168	37	#include "pim_upstream.h"
01d68c9b	38	#include "pim_br.h"
2ca35b3d DS	39	#include "pim_rpf.h"
	40	#include "pim_oil.h"
	41	#include "pim_zebra.h"
	42	#include "pim_join.h"
13c2408c	43	#include "pim_util.h"
01d68c9b DS	44
	45	struct thread *send_test_packet_timer = NULL;
	46
	47	/*
	48	* This seems stupidly expensive. A list lookup. Why is this
	49	* not a hash?
	50	*/
	51	static int
	52	pim_check_is_my_ip_address (struct in_addr dest_addr)
	53	{
	54	/*
	55	* See if we can short-cut some?
	56	* This might not make sense if we ever leave a static RP
	57	* type of configuration.
	58	* Note - Premature optimization might bite our patooeys' here.
	59	*/
c8ae3ce8	60	if (I_am_RP(dest_addr) && (dest_addr.s_addr == qpim_rp.rpf_addr.s_addr))
01d68c9b DS	61	return 1;
	62
	63	if (if_lookup_exact_address (&dest_addr, AF_INET))
	64	return 1;
	65
	66	return 0;
	67	}
	68
	69	static void
13c2408c DS	70	pim_register_stop_send (struct interface *ifp, struct in_addr source,
13c2408c DS	71	struct in_addr group, struct in_addr originator)
01d68c9b	72	{
13c2408c DS	73	struct pim_interface *pinfo;
	74	unsigned char buffer[3000];
	75	unsigned int b1length = 0;
	76	unsigned int length;
	77	uint8_t *b1;
	78	struct prefix p;
	79
	80	memset (buffer, 0, 3000);
	81	b1 = (uint8_t *)buffer + PIM_MSG_REGISTER_STOP_LEN;
	82
	83	length = pim_encode_addr_group (b1, AFI_IP, 0, 0, group);
	84	b1length += length;
	85	b1 += length;
	86
	87	p.family = AF_INET;
	88	p.u.prefix4 = source;
	89	p.prefixlen = 32;
	90	length = pim_encode_addr_ucast (b1, &p);
	91	b1length += length;
	92
	93	pim_msg_build_header (buffer, b1length + PIM_MSG_REGISTER_STOP_LEN, PIM_MSG_TYPE_REG_STOP);
	94
	95	pinfo = (struct pim_interface *)ifp->info;
	96	if (!pinfo)
	97	{
	98	if (PIM_DEBUG_PIM_TRACE)
	99	zlog_debug ("%s: No pinfo!\n", __PRETTY_FUNCTION__);
	100	return;
	101	}
	102	if (pim_msg_send (pinfo->pim_sock_fd, originator,
	103	buffer, b1length + PIM_MSG_REGISTER_STOP_LEN,
	104	ifp->name))
	105	{
	106	if (PIM_DEBUG_PIM_TRACE)
	107	{
	108	zlog_debug ("%s: could not send PIM register stop message on interface %s",
	109	__PRETTY_FUNCTION__, ifp->name);
	110	}
	111	}
01d68c9b DS	112	}
01d68c9b DS	113
998af219 DS	114	void
	115	pim_register_send (const struct ip ip_hdr, struct pim_rpf rpg)
	116	{
	117	unsigned char buffer[3000];
	118	unsigned char *b1;
	119	struct pim_interface *pinfo;
	120	struct interface *ifp;
	121	uint32_t plen;
	122
	123	ifp = rpg->source_nexthop.interface;
	124	pinfo = (struct pim_interface *)ifp->info;
	125	if (!pinfo) {
	126	zlog_debug("%s: No pinfo!\n", __PRETTY_FUNCTION__);
	127	return;
	128	}
	129
	130	memset(buffer, 0, 3000);
	131	b1 = buffer + PIM_MSG_REGISTER_LEN;
	132
	133	plen = ntohs(ip_hdr->ip_len);
9f6d6b12	134	memcpy(b1, (const unsigned char *)ip_hdr, plen);
998af219	135
f5e6574b	136	pim_msg_build_header(buffer, plen + PIM_MSG_REGISTER_LEN, PIM_MSG_TYPE_REGISTER);
998af219 DS	137
	138	if (pim_msg_send(pinfo->pim_sock_fd,
	139	rpg->rpf_addr,
	140	buffer,
	141	plen + PIM_MSG_REGISTER_LEN,
	142	ifp->name)) {
	143	if (PIM_DEBUG_PIM_TRACE) {
	144	zlog_debug("%s: could not send PIM register message on interface %s",
	145	__PRETTY_FUNCTION__, ifp->name);
	146	}
	147	return;
	148	}
	149	}
	150
01d68c9b DS	151	/*
	152	* 4.4.2 Receiving Register Messages at the RP
	153	*
	154	* When an RP receives a Register message, the course of action is
	155	* decided according to the following pseudocode:
	156	*
	157	* packet_arrives_on_rp_tunnel( pkt ) {
	158	* if( outer.dst is not one of my addresses ) {
	159	* drop the packet silently.
	160	* # Note: this may be a spoofing attempt
	161	* }
	162	* if( I_am_RP(G) AND outer.dst == RP(G) ) {
	163	* sentRegisterStop = FALSE;
	164	* if ( register.borderbit == TRUE ) {
	165	* if ( PMBR(S,G) == unknown ) {
	166	* PMBR(S,G) = outer.src
	167	* } else if ( outer.src != PMBR(S,G) ) {
	168	* send Register-Stop(S,G) to outer.src
	169	* drop the packet silently.
	170	* }
	171	* }
	172	* if ( SPTbit(S,G) OR
	173	* ( SwitchToSptDesired(S,G) AND
	174	* ( inherited_olist(S,G) == NULL ))) {
	175	* send Register-Stop(S,G) to outer.src
	176	* sentRegisterStop = TRUE;
	177	* }
	178	* if ( SPTbit(S,G) OR SwitchToSptDesired(S,G) ) {
	179	* if ( sentRegisterStop == TRUE ) {
	180	* set KeepaliveTimer(S,G) to RP_Keepalive_Period;
	181	* } else {
	182	* set KeepaliveTimer(S,G) to Keepalive_Period;
	183	* }
	184	* }
	185	* if( !SPTbit(S,G) AND ! pkt.NullRegisterBit ) {
	186	* decapsulate and forward the inner packet to
	187	* inherited_olist(S,G,rpt) # Note (+)
	188	* }
	189	* } else {
	190	* send Register-Stop(S,G) to outer.src
	191	* # Note (*)
	192	* }
	193	* }
	194	*/
	195	int
	196	pim_register_recv (struct interface *ifp,
	197	struct in_addr dest_addr,
	198	struct in_addr src_addr,
	199	uint8_t *tlv_buf, int tlv_buf_size)
	200	{
77e390e5 DS	201	int sentRegisterStop = 0;
77e390e5 DS	202	struct ip *ip_hdr;
9f6d6b12	203	//size_t hlen;
01d68c9b DS	204	struct in_addr group = { .s_addr = 0 };
01d68c9b DS	205	struct in_addr source = { .s_addr = 0 };
9f6d6b12	206	//uint8_t *msg;
77e390e5	207	uint32_t *bits;
01d68c9b DS	208
	209	if (!pim_check_is_my_ip_address (dest_addr)) {
	210	if (PIM_DEBUG_PIM_PACKETS) {
	211	char dest[100];
	212
	213	pim_inet4_dump ("<dst?>", dest_addr, dest, sizeof(dest));
	214	zlog_debug ("%s: Received Register message for %s that I do not own", __func__,
	215	dest);
	216	}
	217	return 0;
	218	}
	219
80c0d168	220	#define inherited_olist(S,G) NULL
77e390e5 DS	221	/*
	222	* Please note this is not drawn to get the correct bit/data size
	223	*
	224	* The entirety of the REGISTER packet looks like this:
	225	* -------------------------------------------------------------
	226	* \| Ver \| Type \| Reserved \| Checksum \|
	227	* \|-----------------------------------------------------------\|
	228	* \|B\|N\| Reserved 2 \|
	229	* \|-----------------------------------------------------------\|
	230	* \| Encap \| IP HDR \|
	231	* \| Mcast \| \|
	232	* \| Packet \|--------------------------------------------------\|
	233	* \| \| Mcast Data \|
	234	* \| \| \|
	235	* ...
	236	*
	237	* tlv_buf when received from the caller points at the B bit
	238	* We need to know the inner source and dest
	239	*/
	240	bits = (uint32_t *)tlv_buf;
83d8ff00 DS	241
	242	/*
	243	* tlv_buf points to the start of the \|B\|N\|... Reserved
	244	* Line above. So we need to add 4 bytes to get to the
	245	* start of the actual Encapsulated data.
	246	*/
	247	#define PIM_MSG_REGISTER_BIT_RESERVED_LEN 4
	248	ip_hdr = (struct ip *)(tlv_buf + PIM_MSG_REGISTER_BIT_RESERVED_LEN);
83d8ff00 DS	249	source = ip_hdr->ip_src;
83d8ff00 DS	250	group = ip_hdr->ip_dst;
77e390e5	251
ed66602c	252	if (I_am_RP (group) && (dest_addr.s_addr == ((RP (group))->rpf_addr.s_addr))) {
77e390e5	253	sentRegisterStop = 0;
01d68c9b	254
9eda95bd	255	if (*bits & PIM_REGISTER_BORDER_BIT) {
01d68c9b DS	256	struct in_addr pimbr = pim_br_get_pmbr (source, group);
	257	if (PIM_DEBUG_PIM_PACKETS)
	258	zlog_debug("%s: Received Register message with Border bit set", __func__);
	259
	260	if (pimbr.s_addr == pim_br_unknown.s_addr)
80c0d168 DS	261	pim_br_set_pmbr(source, group, src_addr);
80c0d168 DS	262	else if (src_addr.s_addr != pimbr.s_addr) {
13c2408c	263	pim_register_stop_send (ifp, source, group, src_addr);
01d68c9b DS	264	if (PIM_DEBUG_PIM_PACKETS)
	265	zlog_debug("%s: Sending register-Stop to %s and dropping mr. packet",
	266	__func__, "Sender");
77e390e5 DS	267	/* Drop Packet Silently */
77e390e5 DS	268	return 1;
01d68c9b DS	269	}
01d68c9b DS	270	}
77e390e5 DS	271
	272	struct pim_upstream *upstream = pim_upstream_find (source, group);
	273	/*
	274	* If we don't have a place to send ignore the packet
	275	*/
	276	if (!upstream)
6352a6cf	277	{
13c2408c	278	pim_register_stop_send (ifp, source, group, src_addr);
6352a6cf DS	279	return 1;
6352a6cf DS	280	}
77e390e5 DS	281
	282	if ((upstream->sptbit == PIM_UPSTREAM_SPTBIT_TRUE) \|\|
	283	((SwitchToSptDesired(source, group)) &&
80c0d168	284	(inherited_olist(source, group) == NULL))) {
13c2408c	285	pim_register_stop_send (ifp, source, group, src_addr);
77e390e5 DS	286	sentRegisterStop = 1;
	287	}
	288
	289	if ((upstream->sptbit == PIM_UPSTREAM_SPTBIT_TRUE) \|\|
	290	(SwitchToSptDesired(source, group))) {
80c0d168 DS	291	if (sentRegisterStop) {
80c0d168 DS	292	pim_upstream_keep_alive_timer_start (upstream, PIM_RP_KEEPALIVE_PERIOD);
77e390e5	293	} else {
80c0d168	294	pim_upstream_keep_alive_timer_start (upstream, PIM_KEEPALIVE_PERIOD);
77e390e5 DS	295	}
	296	}
	297
	298	if (!(upstream->sptbit == PIM_UPSTREAM_SPTBIT_TRUE) &&
2ca35b3d DS	299	!(*bits & PIM_REGISTER_NR_BIT))
	300	{
	301	pim_rp_set_upstream_addr (&upstream->upstream_addr, source);
	302	pim_nexthop_lookup (&upstream->rpf.source_nexthop,
	303	upstream->upstream_addr, NULL);
	304	upstream->rpf.source_nexthop.interface = ifp;
	305	upstream->source_addr.s_addr = source.s_addr;
	306	upstream->rpf.rpf_addr.s_addr = source.s_addr;
	307	upstream->channel_oil->oil.mfcc_origin = source;
	308	pim_scan_individual_oil (upstream->channel_oil);
	309	pim_joinprune_send(upstream->rpf.source_nexthop.interface,
	310	upstream->rpf.source_nexthop.mrib_nexthop_addr,
	311	upstream->source_addr,
	312	upstream->group_addr,
	313	1);
	314
	315	//decapsulate and forward the iner packet to
	316	//inherited_olist(S,G,rpt)
	317	}
77e390e5	318	} else {
13c2408c	319	pim_register_stop_send (ifp, source, group, src_addr);
77e390e5	320	}
01d68c9b DS	321
	322	return 1;
	323	}
	324
	325
	326	static int
	327	pim_register_send_test_packet (struct thread *t)
	328	{
	329	uint8_t *packet;
	330
	331	packet = THREAD_ARG(t);
	332
	333	*packet = 4;
	334
	335	return 1;
	336	}
	337
	338	/*
	339	* pim_register_send_test_packet
	340	*
	341	* Send a test packet to the RP from source, in group and pps packets per second
	342	*/
	343	void
	344	pim_register_send_test_packet_start (struct in_addr source,
	345	struct in_addr group,
	346	uint32_t pps)
	347	{
	348	uint8_t *packet = NULL;
	349
	350	THREAD_TIMER_MSEC_ON(master, send_test_packet_timer,
	351	pim_register_send_test_packet, packet, 1000/pps);
	352
	353	return;
	354	}